FYI - When I was at the Anna engine plant on 1/27, I specifically asked about the HP increase from 573 to 600, noting that many had questioned that and expected more with the new turbos, larger fuel injectors and increase of HP from the electric motors, several of the members of the engine build team said no, without hesitation and refereed to their results from the testing (all engines are run for 2 hours, 6, 20 minute intervals, 1 warm up, 1 cool down, 1 each @ 2K, 3K, 4K & 5K) in one of the 2 rooms, all results are recorded into the system. They also drain and test the oil after testing, balance the engine and put the oil back in, I forgot to ask if they install a new oil filter before the oil is put back in the engine. The twin motor unit is not part of the test, I am not sure if the 3rd electric motor is part of the test as I do not remember if the transmission is installed when the engine is tested, I will have to look at my pictures.
I sent a note to John Watts, out NSC Insider Tour Guide, concerning the oil filter, if it is replaced before the oil is put back in the engine after testing and balancing, I will post the answer after I hear back from him.